1811013 has 8 divisors (see below), whose sum is σ = 2426976. Its totient is φ = 1201200.

The previous prime is 1810999. The next prime is 1811041. The reversal of 1811013 is 3101181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1811013 - 2⁵ = 1810981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1810983 and 1811001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1811053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (303372).

2^1811013 is an apocalyptic number.

It is an amenable number.

1811013 is a deficient number, since it is larger than the sum of its proper divisors (615963).

1811013 is a wasteful number, since it uses less digits than its factorization.

1811013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1811013 is about 1345.7388305314. The cubic root of 1811013 is about 121.8916219275.

Adding to 1811013 its reverse (3101181), we get a palindrome (4912194).

The spelling of 1811013 in words is "one million, eight hundred eleven thousand, thirteen".